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Título: | Large Impact of the Decay of Niobium Isomers on the Reactor ν e Summation Calculations |
Autor: | Guadilla Gómez, Víctor CSIC ORCID; Algora, Alejandro CSIC ORCID ; Taín, José Luis CSIC ORCID; Estienne, M.; Fallot, M.; Sonzogni, A. A.; Agramunt, Jorge CSIC ORCID; Äystö, J.; Briz, José Antonio CSIC ORCID; Cucoanes, A.; Eronen, T.; Fraile, Luis M. CSIC ORCID; Ganioglu, Ela; Gelletly, W.; Gorelov, D.; Hakala, J.; Jokinen, A.; Jordan, D.; Kankainen, A.; Kolhinen, V.; Koponen, J.; Lebois, M.; Le Meur, L.; Martínez, T.; Monserrate, M.; Montaner-Pizá, A. CSIC; Moore, I.; Nácher, Enrique CSIC ORCID; Orrigo, S. E. A. CSIC ORCID ; Penttilä, H.; Pohjalainen, I.; Porta, A.; Reinikainen, J.; Reponen, M.; Rinta-Antila, S.; Rubio, Berta CSIC ORCID ; Rytkönen, K.; Shiba, T.; Sonnenschein, V.; Valencia, Ebhelixes CSIC; Vedia, V.; Voss, A.; Wilson, J.N.; Zakari-Issoufou, A. A. | Fecha de publicación: | 30-ene-2019 | Editor: | American Physical Society | Citación: | Physical Review Letters 122: 042502 (2019) | Resumen: | Even mass neutron-rich niobium isotopes are among the principal contributors to the reactor antineutrino energy spectrum. They are also among the most challenging to measure due to the refractory nature of niobium, and because they exhibit isomeric states lying very close in energy. The β-intensity distributions of Nb100gs,100m and Nb102gs,102m β decays have been determined using the total absorption γ-ray spectroscopy technique. The measurements were performed at the upgraded Ion Guide Isotope Separator On-Line facility at the University of Jyväskylä. Here, the double Penning trap system JYFLTRAP was employed to disentangle the β decay of the isomeric states. The new data obtained in this challenging measurement have a large impact in antineutrino summation calculations. For the first time the discrepancy between the summation model and the reactor antineutrino measurements in the region of the shape distortion has been reduced. | Descripción: | 6 pags., 3 figs. | Versión del editor: | https://doi.org/10.1103/PhysRevLett.122.042502 | URI: | http://hdl.handle.net/10261/181075 | DOI: | 10.1103/PhysRevLett.122.042502 | Identificadores: | doi: 10.1103/PhysRevLett.122.042502 issn: 1079-7114 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos (IFIC) Artículos |
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PhysRevLett.122.042502.pdf | 288,56 kB | Adobe PDF | Visualizar/Abrir |
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